61353543 has 4 divisors (see below), whose sum is σ = 81804728. Its totient is φ = 40902360.

The previous prime is 61353529. The next prime is 61353583. The reversal of 61353543 is 34535316.

It is a happy number.

61353543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61353543 - 2⁸ = 61353287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61353543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61353583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10225588 + ... + 10225593.

It is an arithmetic number, because the mean of its divisors is an integer number (20451182).

Almost surely, 2^61353543 is an apocalyptic number.

61353543 is a deficient number, since it is larger than the sum of its proper divisors (20451185).

61353543 is a wasteful number, since it uses less digits than its factorization.

61353543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20451184.

The product of its digits is 16200, while the sum is 30.

The square root of 61353543 is about 7832.8502475153. The cubic root of 61353543 is about 394.4087570760.

Adding to 61353543 its reverse (34535316), we get a palindrome (95888859).

The spelling of 61353543 in words is "sixty-one million, three hundred fifty-three thousand, five hundred forty-three".